Which activity combines inventory management, order processing, warehousing, material handling, and transportation

Physical distribution.

Explanation:

In Business marketing, physical distribution can be defined as all the series of activities with respect to the supply of finished goods from production line (factory) to the end users or consumers.

Physical distribution is an activity which combines inventory management, order processing, warehousing, material handling, customer service, packaging, market forecasting, logistics and transportation.

Basically, physical distribution deals with the planning, organizing, implementation and control of the movement of goods and services in order to meet the demands of consumers.

i would say their habit of breaking down.